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Evgesh-ka [11]
3 years ago
10

How many kilograms of 30% salt solution by mass and 40% salt solution by mass

Mathematics
1 answer:
Zarrin [17]3 years ago
3 0

Answer:

60 kilograms of the 30% solution

140 kilograms of the 40% solution

Step-by-step explanation:

Let x = the no. of kilos containing 30% salt (solution 1)

and 200 - x = the no. of kilos containging 40% salt solution 2)

.30x = amount of salt in solution 1

.40(200 - x) = amount of salt in solution 2

.37(200) = amount of salt in the final mixture

salt in solution 1 + salt in solution 2 = salt in final mix.

.30x + .40(200 - x) = .37(200)  

Let's multiply thru the equation by 100 to remove the decimal fractions

30x + 40(200 - x) = 37(200)

30x + 8000 - 40x = 7400

-10x = -600

x = 60 kilograms of the 30% solution

200 - 60 = 140 kilograms of the 40% solution

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3 years ago
the angle of elevation of the top of a building from a point 80 ft away from the building on level ground is 70° determine the b
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Draw a triangle with shortest side on the ground (horiz.).  The length of this side is 80 feet.  Two angles touch the ground:  a right angle, and the 70 degree angle.
 
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The tangent function is the appropriate one to use here:
                       opp          h
tan 70 deg = -------- = ----------
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3 years ago
24 + 0.44x = 19 + 1.69x
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Answer:

if it is find the value of x her it is

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400.00 in scientific notation
mel-nik [20]
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